PDF malware analysis — malicious · b07dde10c12737a0

MALICIOUS

PDF

12.3 KB

MD5: 9dfc7968a1e914db9cedaa5ec31b96b9 SHA-1: cdadbf7b745a125aad09dc7bb46fe2338bcffb8e SHA-256: b07dde10c12737a075f120cf71e4a7e3afbb1fbe9a5120820882c2c8c30ee6ba

146 Risk Score

Malware Insights

MITRE ATT&CK

T1059.001 PowerShell T1204.002 Malicious File

This PDF file was flagged as malicious by ClamAV with the signature 'Pdf.Exploit.Dropped-94'. Static analysis revealed embedded JavaScript within the PDF's metadata and a separate JS stream, indicating an attempt to execute code. The 'PDF_METADATA_EVAL_STAGER' heuristic further suggests a stager mechanism within the metadata. While the exact payload is not visible, the presence of these elements strongly implies the PDF is designed to exploit a vulnerability and download a secondary malicious file.

Machine Learning

Nyx PDF Classifier malicious score 1.0000

Heuristics 4

ClamAV: Pdf.Exploit.Dropped-94 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Exploit.Dropped-94
PDF metadata JavaScript eval stager high PDF_METADATA_EVAL_STAGER

PDF JavaScript reads document metadata fields such as title, subject, or producer, decodes character data with parseInt/String.fromCharCode style helpers, and evals the recovered stage. This is a high-signal exploit-kit staging pattern.
JavaScript action low PDF_JAVASCRIPT

PDF contains a /JavaScript action. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
Embedded JS stream low PDF_JS

PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`javascript_obj0076_000.js` `0a7f4438210afc8124977e9b23881a555f5919ee97b4a4c94ac1a3ba34187a1a`	pdf-javascript-stream	PDF /JS object 76 at offset 0x2EF5	331 bytes

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